Valve grinding tool



May 22, 1934.

A. OLSEN VALVE GRINDING TOOL' Filed M y 1952 FTTL m. n s a W/% %MW- INVENTOR. H. 01. 5 EN ATTORNEY.

Patented May 22, 1934 NITED STATES PATENT OFFICE VALVE GRINDING TOOL Arthur Olsen, San Bernardino, Calif. Application May 2, 1932, Serial No. 608,747

3 Claims. (01. 51-29) This invention relates to improvements in valve operable through the aperture of the washer 18.

grinding tools. The plunger has a stop member 23 thereon.

The general object of the invention is to pro- Opening through the free end of the head 21 Vide 3 Valve grinding 1 ne ldi g a improv and extending towards the point 23 I provide suction cup for engaging the valve. recess 24 which communicates with a trans- 69 Another j t of t e i v t o 18 o pr vid verse recess 25 which opens through the side means for centering the tool on the Work and of the shank 22 at a point slightly above the means to prevent lateral movement of the tool pointed portion 23. relative to the Work. Positioned in the recess 17 between the end A further object of the invention is to provide thereof and the free end of the plunger head a v lv n n o l in lu ing a s ti n p 21 I provide a coiled spring 26 which resiliently for engaging the valve and means to break the urges the head 21 towards the washer 18. vacuum in the suction cup to release the device Communicating with the recess 1'7 and opening from the valve. through the side of the shaft 12 I provide an ap- A Still u th r bject o th i v t n s & erture 27. As shown the aperture 2'7 is adapted provide a a v grinding t l lu i a p to be closed by a valve member 28 which is prefrelity of su t ups f r n a ing t v v erably made of rubber and is mounted on a bar Other objects and advantages of this invention 29 adjacent one end thereof. fhe bar 29 is piv- Will be pp from the feilOWing description otally mounted intermediate its length as at 30 taken in Connection With the accompanying on a bearing member 31 which is mounted on the drawing wherein: shaft 12. Adjacent the end of the bar 29 oppo- 1 is a Side eleVa'fiien Of y imprOVed Valve site the valve member 28 I provide a coiled spring grinding i001 Showing it p y engaging a 32 which is positioned in a recess 33 in the shaft valve to be ground. 12 and engages the bar 29. The spring 32 is 25 Fi 2 is a n r d ra m a y central adapted to resiliently urge the valve member 28 n r u h l h w i F 1- into air tight engagement with the shaft 12 so 3 is a fragmentary central Section through that no air can pass through the aperture 27 into a modified form of my invention, and th recess 17,

4 is a bottom P View Of the device Shown As shown the head 13 includes an annular body 30 in Fig. 3. portion 35 and an enlarged end portion 36. Open- R f r n t h wi y reference h ring through the end of the body 35 opposite the (Item I have indicated my improved Valve grindenlarged portion 36 I provide an annular recess 37 3 13001 generally at AS Shown the device and in the face of the enlarged portion 36 I pro- 10 Comprises a metal Shaft 12 having a rubber vide a saucer-shaped recess 38 which communinead 13 mounted thereon adjacent one end. The cates with a reduced recess 39. The body 35 furend of the shaft 12 opposite the head 13 may ther includes an intermediate wall having an appe of any de ired form it bl for rotating t erture 40 which communicates with the recessSl a 15 1 engaging portion may be provided as and the recess 39 and is larger in cross section 2Shown at v tharrlhthe 1liedujced shrink 22 of tire plungrgr) 12%. the i on e evice ls opera y asse e 40 332 1 3 f gff ifi z igi g 3555 12 head 13 is positioned on the shaft 12 adjacent the p b p g 1 bulbous portion 16 with the free end of the body intermediate the adJacent end of the shaft and engaging the collar AS the body 35 is posi i sonar 15 I provlde an etflarged bulbous p014" tioned on the shaft 12 the bulbous portion 16 of 5 Mon 16 on the l Opemng johrough the i the shaft expands the body 35 as at 41 thereby of the shaft ad acent the portion 16 I provide causing the body 35 to tightly engage the haft recess The end of the Wall defining the and form an air tight seal between the shaft and recess is spun over as at 18 thus providing an the body 5 w t head 1 1 operatively aperture sitioned on the shaft 12 the reduced shank 22 of 50 Positioned in the recess 17 I Provide a plunger the plunger 20 is positioned in the head aperture 5 20 which includes an enlarged head 21 and a 40 and is free t move th r i reduced shank 22 which is pointed at its free A Shown i Fig, 1 a utomobil engine l e end as at The head 21 0f the Plunger 0 such as the valve indicated at 42 usually includes is operable in the recess 17 and is retained therein ntral r cess 43 in its top surface, 55 by the washer 18 and the reduced shank 22 is In use the operator places the pointed end of the plunger 20 in the center recess 43 of the valve and then moves the enlarged end 36 of the head 13 into engagement with the valve. Upon further downward movement of the device the portion 36 is flattened as shown in Fig. 1 thereby expelling the air from the recess 38 whereupon the head 13 acts in the usual manner of a suction cup to retain the device in engagement with the valve.

With the usual type of valve tools which include suction cups for fastening them to the valve, the suction cups slide on the valves when a film of oil or water is on the valve top thereby making it dimcult to retain the tool correctly centered and to retain it in engagement with the valve. With my improved device 10 the plunger 20 assures of absolute centering of the tool on the valve and prevents slipping of the head on the valve even though the valve top has a film of oil or water thereon.

When it is desired to remove the device 10 from a valve the operator swings the bar 29 about its pivot 30 against the action of the spring 32 thereby moving the valve member 28 out of engagement with the shaft whereupon air may pass through the aperture 27 into the recess 17 and thence through the plunger apertures 24 and 25 into the recess 38 whereupon the device may be readily removed from the valve. In some cases the valve 28 may be omitted.

In Figs. 3 and 4 I have indicated a modified form of my invention generally at 45. As shown the device 45 includes a metal operating shaft 46 and a rubber head member 4'7. The head member 47 includes a body portion 48 which merges into an enlarged portion 49 at one end. In the portion 49 I provide a reduced recess 50 which communicates with. a further reduced recess 51. On the face of the enlarged portion 49 intermediate the periphery thereof and the recess 50 I provide a plurality of spaced suction cup members 52.

Adjacent one end of the shaft 46 I provide an enlarged head 53 which is embedded in the body 48 when the head 4'7 is being molded.

Positioned in the recess 51 I provide a metal tube 54 which is open at the end adjacent the re cess 50 and closed at the opposite end. Positioned in the tube 54 I provide a plunger 55 which includes a head portion 56 and a reduced shank 57 which is pointed as at 53. Also positioned in the tube 54 between the closed end thereof and the free end of the plunger head 56 I provide a coiled spring 59 which is adapted to resiliently urge the plunger towards the recess 50. When assembling the device the spring and the plunger head are positioned in the tube 54 and then the sides of the tube adjacent the open end thereof are spun inwardly to form a flange 60 which retains the plunger head 56 in the tube 54.

In operation the operator positions the pointed end 58 of the plunger in the center recess of a valve and then moves the head 4'7 into engagement with the valve and firmly presses it downward whereupon the air is expelled from the suction cups 52 which thereafter retain the device in tight engagement with the valve. The plunger 55 of the device 45 like the plunger 20 of the device 10 prevents sliding of the suction cups on the valve should the valve top have a film of oil or water thereon.

From the description above it will be apparent that I have provided a novel valve grinding tool which is simple in construction and highly effi- .cient in use.

Having thus described my invention, I- claimz' 1. In a valve grinding tool, a shaft, an enlarged collar adjacent one end of said shaft, an enlarged portion on said shaft intermediate said collar and said adjacent end, a recess in said shaft opening through said adjacent end, a plunger, said.

plunger including a head and a reduced shank having a pointed end, said head being positioned in said shaft reess, means to retain said plunger head in said shaft recess, a coiled spring positioned in said shaft recess between the end thereof and the free end of said plunger head, a rubber head member on said shaft, said head including a body portion and an enlarged end portion, a recess in the face of said end portion to form a suction cup, there being a reduced recess cornmunicating with said suction cup recess, said body having a recess open through the end thereof opposite said suction cup recess, said body having an aperture communicating with said suction cup recess, said shaft being positioned in said body recess with the free end of said body engaging said shaft collar, said enlarged portion of said shaft when said shaft is positioned in said body recess expanding said head body portion and thereby forming an air tight seal between said body and said head, said plunger shank extending through said rubber head recess to a point beyond said rubber head.

2. In a valve grinding tool, a shaft having a recess therein opening out of one end thereof, said shaft having an internal flange partially closing said recess, said flange having a circumferential inner wall, a collar on said shaft intermediate the length thereof, said collar having a plane lower face, a plunger movable in said recess and including an elongated cylindrical portion fitting said recess, said plunger having a reduced shank fitting the inner wall of said flange, a spring in said recess for normally urging said plunger to an advanced position, said shank having a pointed front end, a rubber head member on said shaft, said head member including a body portion having an internal cylindrical bore the wall of which is in tight engagement with said shaft, said head member having a plane end face engaging the plane face in said collar, said head member also including an enlarged end portion, said end portion having an internal partition and including a flexible lip arranged to form a suction cup.

3. In a valve grinding tool, a shaft having an enlarged collar thereon, said shaft having a recess therein opening out of one end thereof, said shaft having an internal flange partially closing said recess, said flange having a circumferential inner wall, a plunger movable in said recess and including an elongated cylindrical portion fitting the inner wall of said flange, a spring in said recess for normally urging said plunger to an advanced position, said shank having a pointed front end, k

a rubber head member on said shaft, said head member including a body portion having a portion in tight engagement with said collar, said head member also including an enlarged end portion, said end portion including a flexible lip arranged to form a suction cup, said shaft having an aperture therein communicating with said recess, a valve for closing said aperture, said plunger having an aperture extending therethrough, said aperture communicating at one end with said recess and at the other end with the interior of suction cup whereby the vacuum in the suction cup can be broken by opening the valve.

ARTHUR OLSEN. 

